Controlador Robusto Quasi-Deadbeat e Relaxações com Aplicação em Inversores Conectados à Rede
DOI:
https://doi.org/10.18618/REP.2018.3.2787Abstract
Este trabalho apresenta o projeto de um controlador robusto de corrente por realimentação de estados baseado em desigualdades matriciais lineares, conduzindo a um conjunto de ganhos fixos capaz de garantir a alocação dos polos de malha fechada em um círculo de raio mínimo, centrado na origem e contido no círculo de raio unitário (controlador robusto quasi-deadbeat). Para aplicações em conversores conectados à rede, o procedimento de projeto proposto produz resultados ilustrando que relaxações a partir do controlador robusto quasi-deadbeat garantem estabilidade e bom desempenho para uma faixa de incertezas e para variações nos parâmetros da rede e do filtro.
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